Investigation of the Environmental Controls over the Incorporation of U in Foraminifera

有孔虫中U掺入的环境控制研究

• 批准号: 9907044
• 负责人: Ann Russell
• 金额: $ 21.5万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-10-01 至 2005-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9907044&HistoricalAwards=false
• 关键词: Investigation; Environmental; Controls; over; Incorporation

This project will explore the utility of the U/Ca ratio in foraminiferal shells as a tracer of water temperature and of [CO 3]. Specimens will be cultured in the Laboratory under controlled conditions to determine the correlation of U/Ca with each variable, and the resulting equations will be tested using natural speciments collected in sediment traps from the Sargasso Sea and eastern equatorial Pacific. U/Ca and Mg/Ca analyses will be paired for each analysis to determine whether Mg/Ca can be used to control for the temperature effect.

该项目将探索有孔虫壳中 U/Ca 比率作为水温和 [CO 3] 示踪剂的效用。 样本将在实验室受控条件下培养，以确定 U/Ca 与每个变量的相关性，并将使用从马尾藻海和赤道东太平洋沉积物收集器收集的天然样本来测试所得方程。 U/Ca 和 Mg/Ca 分析将在每次分析中配对，以确定 Mg/Ca 是否可用于控制温度效应。